Feed mechanism for tandem mills.



PATENTED AUG. 27,1907.

G; D. EVANS. FEED MEGHANLSM 'FOR TAN MIL'Ls.

` APPLICATION FILED 213.21.

No. 864x727.

No. 864,727. 7 PATENTBD AUG. 27, 1907'. G. D.. EVANS.

FEED MEGHANISM FOR TANDEM MILLS.

APPLICATION FILED FEB. 21; 1907.4

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WITNESSES |NVEN1'0R "m77 giz.;

T11: NoRRIs PETER: ca., wasHmarom-n. n

UNITED STATES, iarnirrv OFFICE.

GEORGE D. EVANS, OF SHARON, PENNSYLVANIA, ASSIGNOR TO AMERICAN SHEET d'TIN PLATE COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF NEWJERSEY.

FEED MECHANISM FOR TANDEM MILLS.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed February 21,1907. Serial No. $58,734:.

To all whom it may concern:

Be it known that I, GEORGE D. EvANs, of Sharon, Mercer county,Pennsylvania, have invented a new and useful Feed Mechanism for TandemMills, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspeciication, in which- Figure l is a partial longitudinal sectionshowing a preferred form of my invention; and Fig. 2 is a cross'sectionon the line II-II of Fig. l looking toward the left.

My invention relates to the feeding of metal bars, plates or sheetsbetween successive sets of rolls arranged in tandem. Difliculty has beenexperienced in feeding material between such sets of rolls, especiallyin the case of rolling singles which are to be formed into sheets, as inthe case of sheet bars. These bars are fed in sidewise and singly, andas they emerge from the one set of rolls their movement stops at a pointso near the rolls that difficulty has been experienced in providing anypractical form of feed mechanism Afor carrying them into the next set ofrolls.

My'invention is designed to overcome this difiiculty, and it consists inproviding a throw-out which will act to move the metal forward to asufiicient distance to allow the pusher dogs or positive feeder pushmechanism to be brought into position back of the material and thus pushit forward for the next set of rolls.

In the drawings, 2, 2 represent one set of rolls, and 3, 3 another setarranged in tandem therewith. Between the sets of rolls extend thecurved guidesl upon which the metal is moved from one set to the next.The principal feed mechanism 'in the form shown consists of oscillatingarms 5 connected to a rock shaft (i and ariznged to move between thepositions shown in the full and dotted lines respectively in Fig. l.These arms are provided at their lower ends with pivoted gravity dogs 7having stops 8 which prevent their tilting back beyond a certainposition. The weighted portion 9 throws the dog into operative positionafter it has moved back over the bar or other piece of metal. Thedifficulty with this feed mechanism is that in many cases it cannot bemoved back to the rear of the metal emerging from the pass. In manycases these dogs will lie on the bar and the next forward movement ofthe dogs will fail to push the bar forward. Another bar will then comethrough and drop on the rst, and both bars may be fed forwardly andbreak or injure the next mill. To overcome this difficulty, l providethe rocking arc-shaped lever l0, which is fulcrumed to the housing at 1land is actuated by a roller 12 projecting from one of the arms 5 andarranged to roll along the top of the lever. This lever l0 is connectedby pivotal link 13 with a rock arm 14 secured to a cross-shaft l5 havingtwo throw-outs 16 rigidly secured thereto. The link and lever mechanismis so arranged that as the arms 5 moves back it shifts the lever l0 fromthe position shown in dotted lines to that shown in full lines. Duringthis movement of the lever l0 the throw-outs 16 are raised from theposition shown in dotted lines to that shown in full lines. Thismovement will carry the metal forwardly and drop it on the bars 4 in aposition where the dogs 7 will ride back over it and reach a position inthe rear thereof. On the next forward movement of the arms 5 the pivoteddogs will push this piece of metal forwardly into the next pass, and thearms 16 will reach their lower dotted line position ready to act uponthe next bar or piece of metal coming through the set of rolls 2.

The advantages of my invention will be apparent to those skilled in theart. The difficulty in getting a positive feed device into the rear ofthe bar or metal to be fed is overcome, and the bar is moved forwardlyto a position where ordinary pusher mechanism can carry it into the nextpass.

`Any positive feed mechanism may be used instead of the oscillatingpusher arm shown, or the pusher Lrms may be used in connection `withchain tables; and many other variations may be made in the form andarrangement of the main feed mechanism and the throw-outs withoutdeparting from my invention.

l. In a tandem mill, a throw-out device, a positive feed mechanismbetween two of the sets of rolls, a supporting member, and connectionsarranged to actuate the throwout to bring the metal into position to beactuated by the positive feed mechanism 'substantially' as described.

2. The combination with a tandem mili, of feed mechanism between two ofthe sets of rolls, said feed mechanism consisting of a positive feedmechanism and throwout device, a supporting member, and connectionsarranged -to actuate the tl1row-out to move the metal forwardly as thepositive feed mechanism is moved back to its rear position;substantially :is described.

3. The combination with a tandem mill, of feed mech anisin between twoof the sets of rolls, said feed mechanism consisting of back and forthmoving` arms carrying pushers, a throw-out between the said two sets ofrolls, a supporting member, and mechanism for actuating the throw-out asthe pusher arms move backwardly; substantially as described.

4. The combination with a tandem mill, of feed mechanism between two ofthe sets of rolls, said feed mechanism comprising a positive feed deviceand a throwout having connections actuated by the positive feed deviceand :i supporting member for the material engaged by the positive feeddevice; substantially as described.

5. In a tandem mill feed apparatus, reciprocating arms having pusherdevices, a throw-out, a supporting member and an actuating connectionfor the throw-out operated by the reciprocating pusher device;substantially as described.

In testimony whereof, I have hereunto set my hand.

GEO. D. EVANS.

Witnesses H. M. GIAvnR, J. V. Hacen.

